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  • #16
    Plus

    It will run much better after a proper synch.
    You can't stay young forever, but you can be immature for the rest of your life...

    '78E "Pathfinder" Show bike...
    Lovingly restored by Dave Delzell
    Drilled airbox
    Tkat fork brace
    Hardly mufflers
    late model carbs
    Newer style fuses
    Oil pressure guage
    Custom security system
    Stainless braid brake lines

    Comment


    • #17
      Quit sniffing the gas fumes so much or you'll end up like our poor Promiscuous.. err.. I mean Prometheus.
      ........Hey Big, I prefer Promesswithus But that's another debate....Messing around with different airbox designs this summer, One thing for sure that as your air filter gets dirty, it affects the richness of the f/a ratio. I thought my K&N "looked" clean, but after washing it a few days ago, she is running less rich again after pulling the plugs and starts a little easier.
      MDRNF
      79F.....Not Stock
      80G......Not Stock Either....In the works

      Comment


      • #18
        originally posted by the Master xschop
        she is running less rich again after pulling the plugs and starts a little easier .
        What a mod...
        Mine won't even pop without the plugs


        mro

        Comment


        • #19
          nuther

          Another West coast smart ass. ......must be all the mtbe in you all's gas that side of the country
          MDRNF
          79F.....Not Stock
          80G......Not Stock Either....In the works

          Comment


          • #20
            Ride report

            Took the SF out for some joy riding. Put on about 60 miles. It was a great day in the sun. She still lags a bit above 6k but other than that it ran great. Probably could use a bigger main. Or maybe I should just be happy and kept it under 90 cuz that's about all she'll do right now. I'll check the mileage after this tank and if it's decent I should leave it alone. I did sync carbs and it's smooth up to 6k and will continue to pull to 8.5k but not willingly. Plenty of midrange gusto tho. Here's a few pics:


            [/IMG] [/IMG] [/IMG] [/IMG]
            1979 XS 1100 SF(16k now, more to come)
            140 mains, 42.5 pilots, drilled airbox w/uni fliter
            MikesXS Coils- bypassed ballast resistor- new wires
            1975 GL1000 Gold Wing(81k-Old Faithful) and another 75 GL1000 project. MBS sickness for sure.
            Other Bikes Iv'e owned:
            1979 Kawasaki 750 LTD
            1980 Kawasaki 125 Enduro
            1975 Honda 400f
            1976 Honda CB360
            1968 Honda 160

            Comment


            • #21
              Try pics again

              Lets see if this works

              [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] [IMG][/IMG]
              1979 XS 1100 SF(16k now, more to come)
              140 mains, 42.5 pilots, drilled airbox w/uni fliter
              MikesXS Coils- bypassed ballast resistor- new wires
              1975 GL1000 Gold Wing(81k-Old Faithful) and another 75 GL1000 project. MBS sickness for sure.
              Other Bikes Iv'e owned:
              1979 Kawasaki 750 LTD
              1980 Kawasaki 125 Enduro
              1975 Honda 400f
              1976 Honda CB360
              1968 Honda 160

              Comment


              • #22
                Nice lookin' bike. Thing's real clean. If thats open exhaust, might need some bigger mains? How's the air filter?
                2H7 (79) owned since '89
                3H3 owned since '06

                "If it ain't broke, modify it"

                Comment


                • #23
                  Stock air filter that's clean. I wonder if a K&N would help it? What's the UNI filter I keep seeing in the posts?
                  I'm not sure if it's baffled at all on the pipes. sounds really nice tho. Thanks for your comment
                  Last edited by ruffrider; 09-13-2008, 01:18 AM.
                  1979 XS 1100 SF(16k now, more to come)
                  140 mains, 42.5 pilots, drilled airbox w/uni fliter
                  MikesXS Coils- bypassed ballast resistor- new wires
                  1975 GL1000 Gold Wing(81k-Old Faithful) and another 75 GL1000 project. MBS sickness for sure.
                  Other Bikes Iv'e owned:
                  1979 Kawasaki 750 LTD
                  1980 Kawasaki 125 Enduro
                  1975 Honda 400f
                  1976 Honda CB360
                  1968 Honda 160

                  Comment


                  • #24
                    We can always learn something new just reading the post, for the last 65,000 miles I have completely disassembled my carbs when cleaning them, I would soak each carb for 30 mins each in carb cleaner, then soak them in water, then air blow them out, and let them dry, never had any problems til I replaced a diaphragm, in # 4 carb, it thru it all out of sinc, turned out the needle was about 1/8 th shorter. fixed that, smoothed right back out, but lately I have been blowing a little black smoke when pushing it hard. Never took the butterflys off when soaking, so now I probably need to replace the butterfly seals. This is a great forum. Later 'Dog

                    Comment


                    • #25
                      filter

                      The UNI filter is a inexpensive foam filter. I use the K+N with holes drilled in the air box and modified snorkel. Lots of airflow.
                      2H7 (79) owned since '89
                      3H3 owned since '06

                      "If it ain't broke, modify it"

                      Comment


                      • #26
                        I used UNI's on my banshee, they are cheaper and last a long time.. no airbox so I made velocity stacks from PVC pipe and a furnco rubber connector, ran awesome after that.. One observation though.. UNI's and K&N's can suck sand right thru. Now Im talking sand dunes, that was the only time I had probs.. I think its because of the sharp nature of sand grains but I have found them on the inside of K&N's and UNI's, fortunatly stuck in some oil..

                        Im not sure If anyone uses those prefilter socks that go over these types of filters but if you are in a dusty/sandy climate I would use em..
                        XS1100 F/G (79 Bike/80 Motor)
                        Grab a tetanus shot and jump on!!!

                        Comment


                        • #27
                          air box mod

                          Went to the 140 mains and it was a big improvement. But then after reading about the filters and air box mods I tried it without filter. It would pull all the way to redline. So out came the drill. Six 1/2'" holes in the bottom of air box did the trick. No need for the 142.5 mains now cuz the plug color looks good and it makes good power on the top end. It bogs down a little below 3k but I can deal with that. The next size up on pilots would probably help that but I'm afraid to mess with success now. She do 100+ now whereas before it would top out about 90.....i don't even want to go faster do I??? Thanks every one for the great input.
                          Last edited by ruffrider; 10-03-2008, 12:44 PM.
                          1979 XS 1100 SF(16k now, more to come)
                          140 mains, 42.5 pilots, drilled airbox w/uni fliter
                          MikesXS Coils- bypassed ballast resistor- new wires
                          1975 GL1000 Gold Wing(81k-Old Faithful) and another 75 GL1000 project. MBS sickness for sure.
                          Other Bikes Iv'e owned:
                          1979 Kawasaki 750 LTD
                          1980 Kawasaki 125 Enduro
                          1975 Honda 400f
                          1976 Honda CB360
                          1968 Honda 160

                          Comment


                          • #28
                            100+......

                            hey there ruffrider 100+ eh.....so is like that 101 or what.....how far did you take it....when did the yellow stripe come out (ya, i got one too!) and you chickened out....i've had the "rebel devil" up to about 125 or so...then it was time to back off....but she had lots more 2 offer.....maybe on a nice flat straight road....i guess i'll have 2 try that in ohio, cause they don't exist in our area.....glad 2 hear progress is being made and things are running better...always feels good.....talk 2 ya later..ross
                            rebel devil
                            1979 xs 1100f standard
                            authenic historical vehicle
                            42°36'23.52"N, 82°52'44.78"W
                            "I'M IN MY HAPPY PLACE"
                            "i got 14 jobs mon....you only got 1 job....you lazy bones mon"
                            "if you don't wrench on it, get behind me satan!"
                            '96 venture cct.....installed!
                            stainless, braided, pvc coated brake lines
                            i can translate...deustch, nederlands, 汉语, 漢語, français, ελληνικά, italiano, 한국어, português, русско, español and most importantly, 日本語....

                            Comment


                            • #29
                              Hey Ross

                              I just ran out of a straight road and yes, maybe ran out of a little guts or maybe common sense prevailed. I'm curious tho of how fast it can go. I see some specs say 130 mph? I don't think it's running that good yet and don't think I'll try to find out either. I can just see it now.... Honey can you come bail me out of jail
                              1979 XS 1100 SF(16k now, more to come)
                              140 mains, 42.5 pilots, drilled airbox w/uni fliter
                              MikesXS Coils- bypassed ballast resistor- new wires
                              1975 GL1000 Gold Wing(81k-Old Faithful) and another 75 GL1000 project. MBS sickness for sure.
                              Other Bikes Iv'e owned:
                              1979 Kawasaki 750 LTD
                              1980 Kawasaki 125 Enduro
                              1975 Honda 400f
                              1976 Honda CB360
                              1968 Honda 160

                              Comment

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